Method of making phosphono-phosphate containing compounds
AssigneeThe Procter & Gamble Company
InventorsScott Leroy Cron, Ryan M. West
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Abstract
A method of making a phosphono-phosphate compound is disclosed. The method involves a first step of mixing a first component comprising a phosphonic acid, a phosphonate or mixtures thereof, with a second component comprising a source of phosphoric acid or phosphate. The mixture has a molar phosphorous ratio of the first component to the second component of from 1:1 to 1:10. The second step involves either physically or chemically dehydrating the mixture to produce a phosphono-phosphate compound.
Claims26
A method of making a phosphono-phosphate compound comprising the steps of:
- a. mixing a first component comprising a phosphonic acid, a phosphonate or mixtures thereof, with a second component comprising a source of phosphoric acid or phosphate, wherein the mixture has a molar phosphorous ratio of said first component to said second component of from 1:1 to 1:10, and
- b. physically dehydrating the mixture to produce a phosphono-phosphate compound having the structure of Formula 1:
- wherein:
- ε is the site of attachment to a carbon atom;
- R1 is selected from the group consisting of —H, metal salt having Na, K, Ca, Mg, Mn, Zn, Fe, or Sn cation, amine cation salt, and a structure of Formula 2:
- wherein:
- δ is the site of attachment to Formula 1,
- R4 and R5 are independently selected from the group consisting of —H, metal salt having Na, K, Ca, Mg, Mn, Zn, Fe, or Sn cation, and amine cation salt;
- R2 is selected from the group consisting of —H, metal salt having Na, K, Ca, Mg, Mn, Zn, Fe, or Sn cation, amine cation salt, and a structure of Formula 3:
- wherein:
- δ is the site of attachment to Formula 1,
- R6, and R7 are independently selected from the group consisting of —H, metal salt having Na, K, Ca, Mg, Mn, Zn, Fe, or Sn cation, and amine cation salt, and
- n is an integer from 1 to 2 and;
- R3 is selected from the group consisting of —H, metal salt having Na, K, Ca, Mg, Mn, Zn, Fe, or Sn cation, and amine cation salt.
A method of making a phosphono-phosphate compound comprising the steps of:
- c. mixing a first component comprising a phosphonic acid, a phosphonate or mixtures thereof, with a second component comprising a source of phosphoric acid or phosphate, wherein the mixture has a molar phosphorous ratio of said first component to said second component of from 1:1 to 1:10, and
- d. chemically dehydrating the mixture to produce a phosphono-phosphate compound with the structure of Formula 1:
- wherein:
- ε is the site of attachment to a carbon atom;
- R1 is selected from the group consisting of —H, metal salt having Na, K, Ca, Mg, Mn, Zn, Fe, or Sn cation, amine cation salt, and a structure of Formula 2:
- wherein:
- δ is the site of attachment to Formula 1,
- R4 and R5 are independently selected from the group consisting of —H, metal salt having Na, K, Ca, Mg, Mn, Zn, Fe, or Sn cation, and amine cation salt;
- R2 is selected from the group consisting of —H, metal salt having Na, K, Ca, Mg, Mn, Zn, Fe, or Sn cation, amine cation salt, and a structure of Formula 3:
- wherein:
- δ is the site of attachment to Formula 1,
- R6, and R7 are independently selected from the group consisting of —H, metal salt having Na, K, Ca, Mg, Mn, Zn, Fe, or Sn cation, and amine cation salt, and
- n is an integer from 1 to 2 and;
- R3 is selected from the group consisting of —H, metal salt having Na, K, Ca, Mg, Mn, Zn, Fe, or Sn cation, and amine cation salt.
Dependencies are inferred from the claim text.